JP2021187281A - Display unit for work machine - Google Patents

Abstract

To provide a display unit for a work machine which can be smoothly and securely attached to various kinds of work machines connected to a rear part of a traveling machine body in a liftable manner with a detachable structure in a work vehicle provided with the display unit which can be viewed from the rear of the traveling machine body.SOLUTION: Display units for a work machine are detachably provided at left and right sides of a work machine connected to a rear part of a traveling machine body in a liftable manner. The display unit includes: an attachment body which sandwiches a frame to be fixedly attached to the work machine side; and a display body which is supported at the attachment body side and provided so as to be viewable from the rear of the work machine. In the attachment body, a corner part which is bent to house a part of a peripheral surface of the frame is formed in at least one position.SELECTED DRAWING: Figure 5

Description

The present invention relates to a display unit for a work machine including a work machine connected to the rear of the traveling machine and a display unit visible from the rear of the work machine.

It is provided with a traveling machine body, a work machine connected to the rear part of the traveling machine body so as to be able to move up and down, and a display unit detachably attached to both left and right ends of the traveling machine body. The work vehicle described in Patent Document 1 provided on the side and the work vehicle described in Patent Document 2 provided with the display unit on the rear end side of the towing vehicle are conventionally known.

According to the above document, even when the work machine or the towing vehicle is connected to the rear end of the traveling machine, a display unit such as a lamp can be attached to and detached at a position visible from the rear of the traveling machine. Although it can be provided, there is a problem that the display unit on the working machine side may have to be attached when traveling on the road with the working machine connected to the rear part of the running machine. was there.

Japanese Unexamined Patent Publication No. 2017-7605 Japanese Unexamined Patent Publication No. 2003-182451

In the present invention, in a work vehicle provided with a display unit that can be visually recognized from the rear of the traveling machine, the display unit is attached to and detached from various types of working machines connected to the rear part of the traveling machine so as to be able to move up and down. An object of the present invention is to provide a display unit for a work machine that can be smoothly and firmly mounted with a possible configuration.

In order to solve the above problems, the present invention is a display unit for a work machine that is detachably provided on both left and right ends of a work machine that is detachably connected to the rear portion of the traveling machine, and the display unit is the above-mentioned display unit. It has a mounting body that is mounted and fixed to the working machine side by sandwiching a frame, and a display body that is supported by the mounting body side and is visibly provided from the rear of the working machine, and the mounting body is at least. It is characterized in that a corner portion bent so as to accommodate a part of the peripheral surface of the frame is formed in one place.

Secondly, the mounting body has a reinforcing bracket that is erected toward the upper side, and the reinforcing bracket is characterized in that a plurality of mounting holes for adjusting the mounting position of the display body are formed. There is.

Thirdly, the display unit is characterized in that a mounting bracket for supporting a vehicle side light is detachably provided.

By providing the corners at at least one of the mounting portions that sandwich the frame on the working machine side, the display unit can be simply and easily used for the frame having various cross-sectional shapes and thicknesses. Since it can be firmly mounted and fixed, workability and versatility at the time of mounting the display unit are improved.

Further, the mounting body has a reinforcing bracket that is erected upward, and the reinforcing bracket has a plurality of mounting holes for adjusting the mounting position of the display body. Even when the frame is sandwiched at an optimum angle for the mounting portion to be firmly mounted on the frame side according to the shape of the frame, the mounting position of the display portion can be adjusted to an appropriate position. can.

According to the display unit provided with a detachable mounting bracket for supporting the vehicle side light, the presence or absence of the vehicle side light and its arrangement position are determined according to the type and situation of the work machine. Since the change of can be switched, the versatility is improved.

It is an overall side view of the tractor to which the display unit for a working machine of this invention is applied. (A) and (B) are a rear perspective view and a front perspective view showing a working machine. It is a main part perspective view which shows the display unit attached to a work machine. It is a side view of the main part which shows the display unit attached to a work machine. (A) to (D) are a perspective view, a plan view, a side view, and a front view of the display unit. (A) and (B) are exploded views of the display unit.

Hereinafter, embodiments of the present invention will be described with reference to the illustrated examples. FIG. 1 is an overall side view of a tractor which is a work vehicle to which a display unit for a work machine of the present invention is applied, and FIGS. 2A and 2B are a rear perspective view and a front perspective view showing the work machine. It is a figure. The tractor is composed of a traveling machine 2 having a pair of left and right crawler type traveling devices 1 and 1, and a working machine 3 that is vertically connected to the rear of the traveling machine 2 via an elevating link 4.

The crawler type traveling device 1 is hung by a crawler frame 6 extending in the front-rear direction, a drive sprocket 7 and an idler wheel 8 rotatably supported in the front-rear direction of the crawler frame 6, and the drive sprocket 7 and the idler wheel 8. It is composed of a crawler 9 and a crawler 9.

A cabin 11 provided with a control unit on which an operator rides is arranged in the latter half of the chassis frame of the traveling machine 2, and an engine room in which an engine (not shown) is mounted is formed in the first half of the chassis frame. The upper and lateral sides of the engine room are covered with a bonnet 12.

The bonnet 12 is configured to be rotatable up and down with the rear end side as a rotation fulcrum, and by switching to an open posture in which the bonnet 12 is rotated upward, the upper part of the engine room is opened and the engine room is opened. Maintenance work can be done inside.

The elevating link 4 includes a pair of left and right lower links 16 and 16 supported by the rear end portion of the traveling machine body 2 so as to be vertically swingable, and a single top link 17 located on the upper side of the lower link 16. The work machine 3 connected to the rear end of the traveling machine body 2 via the elevating link 4 is provided so as to be able to move up and down by an elevating drive device.

In the illustrated example, the working machine 3 includes a subsoiler device 22 in which a plurality of knife portions 21 which are long blade-shaped members in the vertical direction formed in a large hoe shape are supported side by side in the left-right direction and the front-back direction. It is configured by supporting a roller device 26 provided with a plurality of spikes (claw members) 24 on the peripheral surface of the tubular member 23 in the left-right direction side by side in the front-rear direction (see FIGS. 1 and 2).

According to the working machine 3 having the configuration, a roughing work of digging up the soil hardened by the subsoiler device 22 from a deep part and a subsoil crushing work of crushing and suppressing the soil dug up by the roller device 26. Can be executed simultaneously in one process of work running. That is, according to the working machine 3, even in a hard field scene, high-speed and uniform leveling work can be performed.

Further, on the upper side of the working machine 3 (the subsoiler device 22), a prismatic frame member 27 extending in the left-right direction for supporting the working equipment (knife portion 21) is provided. A display unit 30 having an outer display body indicating the vehicle width (horizontal width) of the work vehicle (working machine) in a state where the working machine 3 is connected is detachably provided on both left and right ends of the frame member 27. There is. The display unit is provided with lighting equipment, specifically, a brake lamp (and a direction indicator) 45 at a position visible from the rear of the work vehicle (see FIG. 2).

By attaching the display unit 30 to the work machine 3 as a display device indicating the vehicle width, the width of the work vehicle (work machine) becomes wider by connecting the large work machine to the traveling machine body 2 as described above. Even if it exceeds 2.5 m (specifically, it exceeds 2.5 m), the width of the work vehicle becomes easier to see, safety is improved, and a large work vehicle can be run on public roads. become.

By the way, as the working machine 3 connected to the traveling machine 2, in addition to the above example, a rotary tilling device equipped with a rotary for cultivating a field scene and a columnar roller body extending in the left-right direction are used. The chemicals in the chemical tank can be sprayed through the halo that forms the sowing bed by crushing, leveling, and suppressing the soil in the field, and the pipe members in the left-right direction that are provided with injection ports at predetermined intervals. A boom sprayer or the like may be used, and each working machine usually has the frame member 27 in the left-right direction to which the display unit can be attached and detached. Hereinafter, a specific configuration of the display unit 30 attached to the left and right ends of the frame member 27 (working machine 3) will be described.

Next, the configuration of the display unit will be described with reference to FIGS. 2 to 6. 3 and 4 are a perspective view of a main part and a side view of the main part showing a display unit attached to the working machine, and FIGS. 5A to 5D are a perspective view and a plan view of the display unit. It is a side view and a front view, and FIGS. 6A and 6B are exploded views of a display unit.

The display unit 30 has a mounting portion (mounting body) 31 mounted on the working machine side by sandwiching the frame member 27 in the left-right direction, and a plate-shaped reinforcement mounted and fixed on the upper side of the mounting portion 31. A bracket 32, a display unit (display body) 33 provided above the mounting unit 31 side via the reinforcing bracket 32, and a mounting bracket 34 for detachably setting a vehicle width lamp made of a light, a reflective material, or the like. The entire display unit 30 is detachably configured on the left and right ends of the working machine 3 (frame member 27).

The mounting portion 31 includes a pair of connecting bolts 37, 37 that adjustably connect between the holding members 36A, 36B, which are a pair of plate-shaped members that hold the frame member 27, and the pair of holding members 36A, 36B. The frame member 27 is sandwiched between a pair of upper and lower sandwiching members 36A and 36B, so that the display unit 30 can be detachably attached to the working machine 3 side.

The sandwiching members 36A and 36B are extended in a direction (front-rear direction) intersecting the frame member 27 in the left-right direction in order to sandwich the frame member 27, and are on the opposite surface side of the sandwiching members 36A and 36B. Is formed with corner portions 38, 38 recessed in a V shape. Further, the corner portions 38, 38 are formed in a right-angled isosceles triangle shape so as to be in close contact with the outer peripheral surface side of the frame member 27 formed in a prismatic shape having a square cross section (FIGS. 4 to 4 to 38). 6).

According to the configuration, the mounting portion 31 sandwiches the frame member 27 so as to be accommodated (fitted) in the corner portions 38 of the pair of upper and lower sandwiching members 36A and 36B, and sandwiches the corner portions 38. The display unit 30 is provided on the working machine 3 by fixing (connecting) the display unit 30 in a state of being tightened between the upper and lower holding members 36A and 36B by using the connecting bolts 37 arranged in the front-rear direction. It can be firmly attached and fixed to the left and right end sides of the frame member 27 in the left-right direction (see FIG. 4).

Further, since the distance between the pair of holding members 36A and 36B can be easily adjusted by the connecting bolt 37 in the mounting portion 31, the thickness of the member of the frame member 27 provided in the working machine 3 Even if the above is different, the mounting portion 31 can be smoothly and easily mounted on the working machine 3 side in a detachable manner. That is, since the display unit 30 can be easily attached to various types of working machines, it is highly versatile.

Further, according to the mounting portion 31, for example, even when the frame member 27 on the working machine 3 side is cylindrical, the space formed by the corner portion 38 is described as described above. By sandwiching the frame member 27 in a state where the frame member 27 is accommodated, the display unit 30 (mounting portion 31) can be attached to and detached from the working machine 3 (frame member 27) side. Can be mounted and fixed to.

At this time, by providing a cushioning member (not shown) on the corner 38 side of the holding members 36A and 36B, the contact area between the holding members 36A and 36B and the frame member 27 is increased. Therefore, the display unit 30 can be mounted and fixed to the working machine 3 side more stably.

Incidentally, in the illustrated example, the corner portions 38 are formed on the opposite surface sides of the pair of upper and lower holding members 36A and 36B, respectively, but may be formed only on one of the upper and lower sides of the holding member. ..

Further, in the illustrated example, the connecting bolts 37 are provided in pairs along the extending direction (front-back direction) of the holding member so as to sandwich the corner portion 38, but the holding member is a wider plate. As the shaped member, a plurality of connecting bolts 37 may be provided in the width direction of the sandwiching members 36A and 36B. According to the configuration, the mounting portion 31 can be mounted on the frame member 27 side in a more stable state.

The display unit 33 is attached and fixed to a square plate-shaped display panel 41, a plate-shaped support portion 42 integrally extending downward from the lower center side of the display panel 41, and the support portion 42. It has a plate-shaped mounting member 43 that can be detachably mounted on the mounting portion 31 side via the reinforcing bracket 32 (see FIG. 6 and the like).

The display panel 41 has colors and patterns that are easily visible even from a distance on the front and rear surfaces formed in the shape of a square plate, and is held at easy-to-see positions on both the left and right ends of the working machine 3. It is configured so that the positions of the left and right ends (and the width thereof) of the work machine (working vehicle) can be shown to a third party behind or in front of the work machine 3 and a worker who is operating the work machine 3. In the illustrated example, the display panel 41 is provided with an outer display board in which strips colored in red and white and written diagonally are alternately arranged.

The mounting member 43 is a rectangular plate-shaped member extending in the vertical direction, and the upper side edge side of the plate-shaped member is mounted and fixed to the front surface side of the support portion by welding or the like. As a result, the mounting member 43 is provided in a T-shape in a plan view with the support portion 42 (display panel 41), so that the mounting member 43 is projected forward from the display portion 42 and the mounting member. The lower side of the 43 is projected further downward from the lower end of the support portion 42 (see FIG. 6 and the like).

Further, the mounting member 43 has a bracket mounting hole 43b formed on the upper side thereof and to which the mounting bracket 34 can be detachably mounted, a wiring hole 43c formed in the vicinity of the bracket mounting hole 43b, and a lower end side thereof. A pair of front and rear display-side mounting holes 43a, 43a formed in the above are bored. The mounting member 43 is configured so that it can be mounted on the mounting portion 31 (reinforcing bracket 32) side via the pair of display-side mounting holes 43a (see FIG. 6 and the like).

The support portion 42 includes a lamp support hole 42a for supporting a lamp such as a brake lamp 45, which will be described later, and a wiring hole 42b for passing wiring, in addition to mounting and fixing the mounting member 43 on the front surface side. Is drilled. A pair of left and right wiring holes 42b are provided so as to sandwich the mounting member 43 when viewed from the front of the display unit 30 (see FIGS. 5 and 6 and the like).

As a result, the support portion 42 is provided with the mounting member 43 on the front surface side thereof, while the brake lamp 45 can be mounted and fixed on the rear surface side thereof. Further, the wiring extending from the traveling machine body 2 side and connected to the brake lamp 45 is near the mounting portion of the brake lamp 45, the wiring hole 43c on the mounting member 43 side, and the support portion 42 side. By passing through the wiring hole 42b of the above, the wiring can be neatly arranged.

The reinforcing bracket 32 is a plate-shaped member provided on the upper surface side of the holding member 36A arranged on the upper side of the pair of holding members 36A and 36B, and extends in the front-rear direction along the holding member 36A. It is set up. Further, the reinforcing bracket 32 is formed in a mountain shape (trapezoidal shape) in which the central side in the front-rear direction projects upward along the shape of the corner portion 38 on the upper surface of the holding member 36A (see FIGS. 4 to 6 and the like). ).

Further, the reinforcing bracket 32 is provided with a plurality of mounting holes 32a1, 32a2, 32b, 32c (four places in the illustrated example) for mounting the display portion 33 (the lower end side of the support portion 42). The mounting holes 32a1, 32a2, 32b, 32c are formed side by side in the front-rear direction along the extension of the bending-formed reinforcing bracket 32.

Specifically, the mounting holes are a pair of front and rear center mounting holes 32a1, 32a2 formed on the front and rear center side bent upward along the corner portion 38, and front and bottom of the front center mounting hole 32a1. It has a front mounting hole 32b arranged on the side and a rear mounting hole 32c arranged on the rear lower side of the rear center mounting hole 32a2, and the mounting holes are arranged in a trapezoidal shape in the front-rear direction. Have been placed.

Further, the mounting holes 32a1, 32a2, 32b, 32c are arranged so that the adjacent mounting holes are evenly spaced, and the spacing is such a pair of front and rear displays formed on the mounting member 43 side. It is configured to be the same as the distance between the side mounting holes 43a and 43a (see FIG. 4).

As a result, the display unit 33 has a pair of front and rear display-side mounting holes 43a formed on the lower end side of the support portion 42, and two mounting holes 32a1, 32a2 selected from the reinforcing bracket 32 side. By tightening together with 32b and 32c, the display portion 33 can be detachably bolted to the mounting portion 31 (reinforcing bracket 32) side (see FIG. 6 and the like).

According to the configuration, the display unit 33 is attached to the pair of front and rear central mounting holes 32a1 and 32a2 on the reinforcing bracket 32 side, whereby the display unit 33 is attached to the mounting unit 31 (the upper holding member 36A). The display unit 33 is attached to the central mounting hole 32a1 adjacent to the front mounting hole 32b in an upright posture (see FIGS. 4 and 5) that is upright from the upper surface side). The display unit 33 is tilted forward (45 degrees) from the mounting unit 31 in a forward tilted posture (not shown), and the display unit 33 is mounted in the central mounting hole 32a2 adjacent to the rear mounting hole 32c. As a result, the display unit 33 is tilted rearward (45 degrees) from the mounting unit 31 in a rearward tilted posture (not shown).

As a result, the user can take a suitable posture from the above postures according to the type of the work machine to which the display unit 30 is attached, specifically, the axial angle of the prismatic frame member 27 and the like. By selecting and mounting the display unit 33 on the mounting portion 31 (reinforcing bracket 32) side, the frame member 27 does not tilt the display unit 30 significantly in the front-rear direction with respect to the working machine 3. Can be mounted and fixed on the side.

Specifically, when the display unit 30 is supported in a state where the peripheral surface of the prismatic frame member 27 on the side of the working machine 3 to be mounted is inclined with respect to the horizontal plane in a side view, the display unit 30 is supported. When the display unit 33 is mounted on the mounting unit 31 side in an upright posture (see FIG. 4 and the like), and the peripheral surface of the frame member 27 is supported in a state parallel to the horizontal plane in a side view (not shown). ), By mounting the display unit 33 on the mounting unit 31 side in a forward tilted posture or a backward tilted posture, the display unit 30 (display panel 41) is greatly increased in the front-rear direction with respect to the working machine 3. It can be attached and fixed to the frame member 27 side without being tilted.

From the above, even if the thickness and the angle in the axial direction of the frame member 27 provided on the working machine 3 side are different, the display unit 30 works in a state where the display panel 41 is easily seen. It can be mounted and fixed on the machine 3 side.

The mounting bracket 34 is a plate-shaped member that is bent and formed in an angle shape, and has a fixed surface that is mounted and fixed to the mounting member 43 side and a mounting surface that supports a vehicle side light 46 (reflecting material, light, etc.). And have.

The fixing surface is provided with fixing pins 47, 47 for mounting the mounting bracket 34 on the mounting member 43 side, and a wiring portion 48 formed in accordance with the wiring hole 43c on the mounting member 43 side. .. Further, the wiring portion 48 is composed of a positioning portion 48a which is an annular convex portion that fits into the wiring hole on the mounting bracket side, and a wiring hole 48b formed inside the positioning portion 48a (FIG. FIG. See 6 mag).

According to the configuration, the mounting bracket 34 can be easily positioned by fitting the positioning portion 48a into the wiring hole 43c on the mounting member 43 side, and the mounting bracket 34 can be mounted. Even when it is mounted on the mounting member 43 side, it is possible to maintain a state in which wiring can be passed without filling the wiring hole 43c. That is, the wiring extending from the traveling machine body 2 side can be connected to the brake lamp 45 and the vehicle side light 46 through the wiring holes 43c and 48b.

An indicator light mounting hole 49 for mounting a lamp or the like (or a reflective material or the like) is formed on the mounting surface, and in the illustrated example, the work vehicle (work) is directed toward the front of the work machine 3. A side lamp 46 that informs the width of the machine) is attached and fixed. As a result, the display unit 30 can be detachably attached to the vehicle side light 46 in front of and below the display panel 41 so as not to interfere with the visual recognition of the display panel 41.

According to the configuration, the lighting equipment can be detachably installed on the front side of the display unit 30 according to the type and application of the work machine 3 attached to the traveling machine 2, so that the display unit can be attached and detached. The versatility of is further improved.

2 Traveling machine 3 Working machine 27 Frame member (frame)
30 Display unit 31 Mounting part (mounting body)
33 Display unit (display body)
32 Reinforcing bracket 34 Mounting bracket 38 Corner 46 Side light

Claims (3)

It is a display unit for a work machine that is detachably provided on the left and right ends of a work machine that is detachably connected to the rear part of the traveling machine.
A mounting body that is mounted and fixed to the working machine side by sandwiching a frame that is provided on the working machine side and extends in the left-right direction.
It has a display body that is supported on the mounting body side and is provided so as to be visible from the rear of the working machine.
The mounting body is a display unit for a work machine in which corners bent so as to accommodate a part of the peripheral surface of the frame are formed in at least one place. The mounting body has a reinforcing bracket that is erected upward.
The display unit for a work machine according to claim 1, wherein the reinforcing bracket is formed with a plurality of mounting holes for adjusting the mounting position of the display body. The display unit for a work machine according to claim 1 or 2, wherein a mounting bracket for supporting a vehicle side light is detachably provided.

Images